| 摘要 |
An exhaust gas cooler for reducing the temperature of exhaust gases from internal combustion engines, comprising an external tube extending between two tube plates or end walls and defining a coolant chamber, coolant inlet and outlet means communicating with the coolant chamber, and a plurality of internal tubes extending between the end walls and arranged to carry the exhaust gas through the coolant chamber. The external tube has a cross-sectional shape which has a height (H) in the major axis which is greater than its width (W) in the minor axis perpendicular to the major axis, preferably oval, or comprising two semi-circles connected by common straight line tangents parallel to the major axis. Such a cross-sectional shape means that the exterior tube has a planar face which simplifies the fitting of mounting brackets and placement with an engine compartment.
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